#!/usr/bin/node

const argv=process.argv;

//1 argv number equal 3
if(argv.length!==3){
  console.log('cmd exit code');
  process.exit(1);
}
//code type is number
if(isNaN(Number(argv[2]))){
  console.log('argv must be number');
  process.exit(2);
}
//code range>0
if(Number(argv[2]<0)){
  console.log('argv must >0');
  process.exit(3);
}

process.exit(argv[2]);
